Fifth-wheel



(No Model.) J. M. GIRAUD.

FIFTH WHEEL. No. 396,476. Patented Jan. 22, l1889.

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JOHN MARIE GIRAUD, OF IVARVIGK, MARYLAND.

FIFTH-WHEEL.

SPECIFICATION forming part of Letters Patent No. 396,476, dated January22, 1889.

Application led August 24, 1888. Serial No. 283,672. (No model.)

To all 1072/0712. it may concern:

Be it known that I, JOHN MARIE GIRAUD, of Varwick, in the county ofCecil and State of Maryland, have invented a new and useful Improvementin Fiftli-\Vlieels, of which the following' is a specification.

My invention is an improvement in fifth` wheels, seeking to provide aftli-wlieel simpler, stronger, and less exposed to dust, sand, and thelike than the ordinary fifth-wheel construction, and by which a broadfth-wheel will be provided in such manner as to avoid any tilting orrocking of the iifth-wheel from any unequal disposition of the load inthe vehicle or in getting into and out of the said vehicle.

The invention consists in certain novel con structions and combinationsof parts, as will be hereinafter1 described and claimed.

In the drawings, Figure l. is a plan view of the fifth-wheel with thebolster in place, the body being removed. Fig. is a vertical sectionthereof on about line x fr, Fig. l, the bolster being' shown in sideview. Fig. 3 is a sectional view on about line y y, Fig. l; `and Fig. etis a sectional view on about line 5 z, Fig. l.

The fifth-wheel, as shown, comprises the parts A, B, and C, which, forconvenience of reference, I shall denominate, respectively, the wheel,the circle, and the ring, such parts being preferably formed separatelyand secured in the manner hereinafter described.

The circle B is secured on the axle D, and is made in the form of anannulus, having the central opening or bore, l), and provided in itsupper side next said bore with t-he circular rabbet 'b'. The wheel A isformed with the similar circular portions, a a, and the radialcircumferential flange a', dividing such parts. The lower portion, a,its within the bore b of circle B, and the iiange a lits in the rabbet bof such part, while the upper portion, a, iits within the centralcircular opening, c, in the ring C. rlhe wheel A, it will be seen, issecured to the bolster E, preferably by clips F, the arms of which passupward through the wheel and project up on opposite sides of and abovethe bolster sufficiently far to aid in securing the spring'.

I secure the ring C to the circle B preferably by the same clips, G, asserve to secure the circle to the axle and two bolts on each side of theaxle at equal distance. Suitable oil-holes may be formed through thering C, as shown at H, Fig. l.

The construction, as will be understood from the drawings, is simple andstrong. The ring C, in addition to securing the wheel on the circle,operates as a sand and dust guard to prevent ingress of sand, dust, andthe like to the bearings between the wheel and circle.

It will be seen that the wheel A is the same on both sides, so that ifone side of same wears more than the other the said wheel may beinverted, thus bringing a fresh wearingsurface into position.

It will be seen that no king-bolt is needed, and that breaking isrendered impossible by the fact that resistance is afforded by theflange of the wheel against the rabbet and by the shoulder of said wheelagainst the annulus.

It will be observed that tilting will be prevented by the wheel bearingequally on all sides.

The circle B and ring C may be said to constitute a framing or holderfor the'wheel A.

Having thus described myinvention, what I claim as new isl. The improvedfifth wheel herein described, comprising the wheel A, provided with acircumferential rim-Hange, CL', and having circular portions a a projected above and below such flange, the circle having an opening toreceive one of such portions a and a rabbet to receive the Iiange a',and the ring arranged to cover such flange a', and having an opening toreceive one of the portions a, substantially as set forth.

2. In a ifth-wheel, the combination of a wheel, A, havingacircumferential rim-flange, a', and provided with` circular portions@ a,projected above and below such iiange, and the framing or holderreceiving such wheel, substantially as set forth.

3. The circle having opening'b and rabbet b', Combined with the Wheelhaving similar circular portions, a a, and flange a between the same,such flange being fitted to the rab bet YJ', and the ring C, secured tothe circle, Substantially as set forth.

Ll. The combination, substantially as de scribed, of the axle, thecircle B, having opening b and rabbet b', the bolster, the wheel A,having portions a a and flange a', the Clips

